Caroline Swiftlet vs African Palm Swift
Aerodramus inquietus 比較対象 Cypsiurus parvus
Side-by-Side Comparison
| 属性 | Caroline Swiftlet | African Palm Swift |
|---|---|---|
| 学名 | Aerodramus inquietus | Cypsiurus parvus |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 22.8 cm (9.0 in) | 27.2 cm (10.7 in) |
| 体重 | 11.0 g (0.39 oz) | 14.38 g (0.51 oz) |
| 食性 | Feeds on aerial plankton including tiny flies and spiders; forages in large noisy flocks above … | Exclusively aerial diet; consumes tiny flying insects and spiders, sometimes following insect swarms for km. |
| 一腹卵数 | 1-2 | 1-3 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Caroline Swiftlet
Thin twittering calls; 'tsit-tsit' over Caroline Islands; echolocation clicks in cave roosts; moderate-pitched for swiftlet; produces soft chattering at colonial nesting sites
African Palm Swift
Deep, hollow churring trill with resonant bass quality; prolonged vibrating call audible at significant range in open woodland.
Geographic Range & Migration
Caroline Swiftlet
Found across the Caroline Islands of Micronesia including Pohnpei and Chuuk. Resident in lowland forest and cave systems.
African Palm Swift
Found across sub-Saharan Africa from Senegal east to Somalia and south to South Africa. Common in open areas near palms; nests in palm leaves.
保全状況
Caroline Swiftlet
African Palm Swift
How to Tell Them Apart
Caroline Swiftlet
Small; dark grey-brown upperparts; pale buff rump band; underparts pale greyish-white; forked tail; Micronesian endemic from Caroline Islands; very similar to Palau Swiftlet but distributed on a distinct island group.
African Palm Swift
Slender and long-tailed; uniformly pale greyish-brown overall; underparts paler grey-buff; long deeply forked tail; pale uniform appearance with no contrasting markings; widespread African palm-nesting swift with distinctive slender silhouette.
About These Birds
Caroline Swiftlet
カロリンアナツバメは西太平洋のカロリン諸島に生息する固有のアナツバメである。
African Palm Swift
A slender swift (15-17 cm) with long, narrow wings and a deeply forked tail. Dark brown plumage. Found across sub-Saharan Africa in savanna and open woodland, closely associated with palm trees. Aerial insectivore. One of Africa's most abundant swift species.